Effective September 30, 2026. RuleSprout is developed by Hailink Labs, the brand of Shenzhen Hailink Technology Co., Ltd..
Children and local data
RuleSprout is designed for children ages 6-8 and their parents. The app does not request an account, child identity, birthday, name, email or profile. We do not collect personal information through the app. Lesson progress, attempts, completion dates, the current lesson checkpoint and settings stay on the device. There is no developer backend, cloud sync, public sharing or export.
Permissions and tracking
The app does not request camera, microphone, photos, location, contacts, Bluetooth or notification permission. It does not listen or record. There are no ads, tracking, third-party analytics or third-party crash reporting SDKs. Core lessons use visual feedback and work offline.
Apple purchases
The first six lessons are free. Apple processes the optional single lifetime purchase and restoration through StoreKit. The app checks verified purchase information for paid access. Hailink Labs does not receive payment card details or operate a receipt server. Apple may process purchase and diagnostic information under its own policies and your device settings.
Storage and deletion
Removing the app removes its local app data. Reinstalling can lose lesson progress; restoring a purchase does not restore that progress. Operating-system backups may include app data according to your Apple settings. Manage those backups separately. We cannot recover lesson progress from a server.
Parent support and websites
Purchases, restoration, privacy, support and external links are behind a parent check. If a parent emails support, we receive the email address, message and attachments. Do not send children’s names, photos, voices, payment details or other personal information. We use correspondence only to provide support, not advertising. Our company mailbox uses Tencent business email; Hailink Labs in China may access support messages. Messages are retained for no longer than 12 months after the issue closes unless an ongoing issue or legal obligation requires longer.
This website has no analytics, tracking scripts, accounts or contact forms. GitHub Pages processes technical requests such as IP addresses to deliver and protect the site. Parents can email us to request access, correction or deletion of support information. We may verify the request using the relevant email address. Material policy changes will be explained here with an updated effective date.